It mean he used fact and knowledge or scientific studies to back up the writing
Scanning Tunneling Microscope I think,
- hope this helps.
In Bernard Malamud´s "A summer´s reading", George likes the fact that his neighbors are beginning to threat him differently because they believe he is spending his time reading. It is as is their new found appraisal of him boosts his confidence. No longer is he just a twenty years old man who lives with his father a sister above a butcher´s shop but rather he has the potential to be somebody. George and the guys on the store did not recognize each other because they always had an impression of George as a shy and silent guy that do not believe himself; however, after George´s discovery, finally realize he was a man "different", sure about himself and his capacity.
The two statements that best summarize the excerpt are:
"Think of a heap of charred wood and all in one flash!", and "In thunder as in sunshine, I stand at ease."
These sentences show the attitude of the salesman trying to convince the narrator by making he afraid of the consequences if he doesn't buy the lightning-rod.
The second sentence shows how the narrator is not afraid nor convinced by the salesman and scolds him, portraying the triumph over human fear.
I am going to try i say it might be 2 4 6 1 7
